Finding the Fourth Proportional to 10,631.31, 15,945.72 and 2,840.73

Step by Step Solution

1. Step 1: Write the proportion equation
   10,631.31 : 15,945.72 = 2,840.73 : x
2. Step 2: Convert to fraction form
   10,631.31/15,945.72 = 2,840.73/x
3. Step 3: Cross multiply
   10,631.31x = 15,945.72 × 2,840.73
4. Step 4: Simplify right side
   10,631.31x = 45,297,485.18
5. Step 5: Solve for x
   x = 45,297,485.18/10,631.31
6. Step 6: Final answer
   x = 4,260.76